Eliminating the smell of coal-oil



t UNITED STATES,

PATENT OFFICE,

LEON BLUMENTHAL, OF MINNEAPOLIS, MINNESOTA.

ELIMIONATING THE SMELL OF COAL-OIL.

SPECIFICATION forming part of Letters Patent No. 312,605, dated February24, 1885.

(No specimens To'all whom it may concern.-

Be it known that I, LEON BLUMENTHAL, of Minneapolis, Hennepin county,Minnesota, have invented a new and Improved Process of Eliminating theSmell of Ooal-Oil-, of which the following is a full, clear, and exactdescription.

My invention especially contemplates the treatment of refined oil, theobject being to thoroughly remove all traces of the original odor fromthe kerosene; and to this end my invention consists in employing inducedcur rents of air as a vehicle for carrying away a portion of the odorousimpurities in the liquid, andof neutralizing or destroying a furtherportion of such impurities by the action of sulphuric ether, and, whilechanging the color of the product, in neutralizing the remainingimpurities by the addition of a coloring compound and a mixture forimparting fragrance.

In the procedure of carrying out my invention I locate the oil to beacted upon in asuitable tank, wherein it is acted upon and thoroughlyagitated for the period of four (4) hours, or thereabout, by currents ofordinary atmosphere induced by any suitable pump ing apparatus connectedto the said tank. Then a certain quantity of sulphuric etherabout one(1) dram to each gallon of oil-is added to the oil while in the tank andthoroughly incorporated therewith by the action of the air-currents,which areagain supplied, as before stated, and continued for the periodof ten (10) minutes. The color of the product so formed may now bemanipulated to any desired shade by adding to each fifty gallons amixture consisting of one (1) ounce aniline (any color) and twelve (12)ounces linseed-oil. The addition of this coloring mixture not onlychanges the color of the product, but a portion of the remainingimpurities are neutralized thereby.

To still further and more completely destroy any remaining trace ofodorous impurity that may adhere to the product and at the same time toimpart a pleasing fragrance thereto, a mixture consisting of one (1)ounce oil of almonds (or a like quantity of any other fragrant extractoil) and one (1) ounce sulphuric ether is added to each fifty {50)gallons of product.

lam aware that in refining crude oil aircurrents have been utilized foragitating the liquid; but as my improved process relates particularly torefined kerosene, I disclaim the application of air-currents to thecrude material.

I claim as my invention- 1. The process of eliminating the odorousimpurities from refined kerosene,which consists in, first, subjectingthe liquid to the action of induced air-currents; second, adding aboutone dram of sulphuric ether to each gallon of the product; and, third,continuing the action of the air-currents, substantially as described.

2. The within-described process of eliminating the odorous'impuritiesfrom refined kerosene, which consists in, first, subjecting the liq- 1uid to the action of induced air-currents for the period of about fourhours; second, adding about one dram of sulphuric ether to each gallonof theproduct; third, continuing the action of the air-currents for theperiod of about ten minutes; fourth, changing the color of the productby adding thereto aniline, sulphuric ether, and linseed-oil, combined inabout the proportions mentioned; and, fifth, imparting fragrance to theproduct by the addition of a fragrant extract oil combined, withsulphuric ether in about the proportions stated,substantially as setforth.

In testimony whereof I affix my signature in presence of two witnesses.

LEON BLUMENTHAL.

\Vi tnesses ELIJAH BLOOM, ELMAN CONNER.

